Physical Science - Ch 15 Review

A substance is __________ .

• always an element

• always a compound

• either an element or a compound

• a mixture of compounds

A(n) __________ is a substance in which all the atoms in it are alike.

• compound

• mixture

• element

• solution

Which of the following is a compound?

• air

• blood

• water

• brass

A(n) __________ is a substance in which all the exact combinations of elements are always the same.

• synthetic element

• compound

• mixture

• solution

The silvery liquid used in thermometers, called mercury, is a(n) __________ .

• compound

• element

• mixture

• solution

Which of the following is a substance?

• milk

• water

• vinegar

• cheese

Which of the following is a homogeneous mixture?

• milk

• pond water

• soft drink

• gelatin

Which of the following is a solution?

• salt water

• milk

• muddy water

• chlorine

A __________ is a heterogeneous mixture that never settles.

• solution

• suspension

• compound

• colloid

A mixture in which particles are so small they cannot be seen with a microscope is a __________ .

• heterogeneous mixture

• solution

• suspension

• element